LOST 10mph AND ABOUT 6 TENTHS - Page 7

monte8616 · 01-01-2021, 11:48 AM

Quote:

Originally Posted by Stan Weiss

Is the car down everywhere in the run or is the early part of the run still about the same?

Stan

Everywhere

FED 387 · 01-01-2021, 01:19 PM

Try disconnecting the fuel line at the rear of the car blow it out with a low pressure air hose ---if you have a filter blow the line between rear of car and front of filter make sure its open ---then try from tank to before the filter with line disconnected--- from the rear to front try blowing from tank side of the filter thru the filter --- probably a clogged filter --if you do the 3 step method you will isolate where its "plugged"--- how old are the fuel lines in the car?? are they Aeroquip??? or stock??? if they are more than 2-3 years old might be time to replace them as the lining has maybe deteriorated -also check regulator for any obstructions ----FED 387

Capri · 01-02-2021, 12:29 PM

For curiositys sake, did you check the rear end housing and see if its flipping? We straightened out a pinion angle shifting problem and housing binding on a car and it was worth half a second.

greg h williams · 04-21-2021, 09:49 AM

Does anybody know if this problem was ever resolved? Curious as to what it ended up being.

Angelo DiTocco · 04-21-2021, 12:38 PM

Definitely Check all your battery cables and grounds etc... carefully!

Bob Mulry · 05-02-2021, 02:51 PM

With a Data Logger, on my car I was able to take my best run and just superimpose one run over the other....

Look at flash, fall back, EGT, fuel pressure and all of your data inputs.

My old AutoMeter logger had this feature, but I don’t know about racepak

Good luck

monte8616 · 06-07-2021, 10:53 PM

Just in case anyone would like an update... it appears as though the electric fan we changed to must’ve been the issue... we went to a water pump/electric fan combo and car ran well - still a few kinks to work out but it appears as though the gremlins have moved on!! Thanks so much for all the ideas and advice!!

The Hawk · 06-13-2021, 02:20 PM

Glad you figured it out!

01-01-2021, 01:19 PM	#62
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,378 Likes: 426 Liked 304 Times in 163 Posts	Re: LOST 10mph AND ABOUT 6 TENTHS Try disconnecting the fuel line at the rear of the car blow it out with a low pressure air hose ---if you have a filter blow the line between rear of car and front of filter make sure its open ---then try from tank to before the filter with line disconnected--- from the rear to front try blowing from tank side of the filter thru the filter --- probably a clogged filter --if you do the 3 step method you will isolate where its "plugged"--- how old are the fuel lines in the car?? are they Aeroquip??? or stock??? if they are more than 2-3 years old might be time to replace them as the lining has maybe deteriorated -also check regulator for any obstructions ----FED 387 Last edited by FED 387; 01-01-2021 at 01:25 PM. Reason: spelling

01-02-2021, 12:29 PM	#63
Capri Member Join Date: Apr 2004 Posts: 172 Likes: 0 Liked 29 Times in 15 Posts	Re: LOST 10mph AND ABOUT 6 TENTHS For curiositys sake, did you check the rear end housing and see if its flipping? We straightened out a pinion angle shifting problem and housing binding on a car and it was worth half a second.

04-21-2021, 09:49 AM	#64
greg h williams Junior Member Join Date: Jul 2018 Posts: 23 Likes: 4 Liked 24 Times in 5 Posts	Re: LOST 10mph AND ABOUT 6 TENTHS Does anybody know if this problem was ever resolved? Curious as to what it ended up being.

04-21-2021, 12:38 PM	#65
Angelo DiTocco Senior Member Join Date: Dec 2001 Location: NY, NY Posts: 746 Likes: 170 Liked 189 Times in 46 Posts	Re: LOST 10mph AND ABOUT 6 TENTHS Definitely Check all your battery cables and grounds etc... carefully! __________________ Angelo DiTocco '98 Firebird SS/HA '98 Firebird B/SA

05-02-2021, 02:51 PM	#66
Bob Mulry VIP Member Join Date: Apr 2002 Location: Coarsegold, CA Posts: 1,017 Likes: 57 Liked 321 Times in 101 Posts	Re: LOST 10mph AND ABOUT 6 TENTHS With a Data Logger, on my car I was able to take my best run and just superimpose one run over the other.... Look at flash, fall back, EGT, fuel pressure and all of your data inputs. My old AutoMeter logger had this feature, but I don’t know about racepak Good luck __________________ Bob Mulry 7516 STK A & M Motorsports

06-07-2021, 10:53 PM	#67
monte8616 Junior Member Join Date: Oct 2010 Posts: 18 Likes: 39 Liked 14 Times in 6 Posts	Re: LOST 10mph AND ABOUT 6 TENTHS Just in case anyone would like an update... it appears as though the electric fan we changed to must’ve been the issue... we went to a water pump/electric fan combo and car ran well - still a few kinks to work out but it appears as though the gremlins have moved on!! Thanks so much for all the ideas and advice!!

06-13-2021, 02:20 PM	#68
The Hawk VIP Member Join Date: Mar 2003 Location: Littleton,Colorado Posts: 1,192 Likes: 0 Liked 250 Times in 107 Posts	Re: LOST 10mph AND ABOUT 6 TENTHS Glad you figured it out! __________________ Lane Weber It`s Not What You Drive That Wins....It`s How You Drive It